Logging-engine.



H. L. TURNEY. LOGGINGENGINE.

APPLICATION TILED AUG.14, 1911.

Patented Sept. 10, 1912.

2 SHEETS-SHEET 1.

Wlitnesses lnventor by V Atto rneys H. L. TURNEY.

LOGGING ENGINE.

APPLICATION FILED AUG. 14, 1911.

1,038,029. Patented Sept. 10, 1912.

2 SHEETS-SHEET 2.

witnesses Zmylnventor 5% b I l h Attorneys HARRY LEON TURNEY, OF PORTLAND, OREGON LOGGING-ENGINE.

Specification of Letters Patent. v Patented Sept. 10, 1912-.

Application filed August 14:, 1911. Serial No. 644,029.

To all whom it may concern: Be it known that I, HARRY L. Tunney, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented a new and useful Logging-Engine, of which the following is a specification. r

This invention relates to an improvement in logging engines.

The primary object .of this invention is to provide simple and eflicient meansfor varying the speed of the hoisting drum.

A further objectof the invention is to provide means for normally holding the driving gears out of contact with the drum.

In the drawings;Figure 1 is a longitudinal section. Fig. 2 is a section on the line, 2-2 of Fig. 1. Fig. 3 is a detail view of one of the plates which is supported to rotate with the driving gear.

In the drawings, 10 deslgnates the Wlnding drum which is formed with the hub portion 11 supported to rotate on shaft 12, the hub being formed with bearings 14 which embrace the centrally enlarged portion 15 of the shaft 12, a babbitt insert 16 being arranged between said bearings and said shaft, oil being supplied to the shaft by means of the tube 17. Mounted for free rotation on the reduced end 18 of the shaft 12 are the drive wheels 19, the hub portions 19 of said wheels extending within the hub portion of the winding drum 10, the end portions of the hub portions 19 being spaced from the bearings 14 of the drum. The shaft 12 is screw threaded adjacent the bearings let and receives a collar 20, a babhitt insert spacing said collar from the end portion of the bearing 14, these collars preventing the drum from moving endwise on the shaft. The hub portions of the drive wheels 19 are each provided with apertured lugs 21 which support the end portions of the rods 22, these lugs being three in number, the rods being provided with stops 24 which limit their movement toward the drum. A triangular plate 25 is freely mounted on the shaft 12 and the rods 24 are each secured to one of the corners of said plate, said plate contacting with the collar which lies adjacent the hub portion 16, a spring 27 being coiled around each of the rods, said springs spacing the gear wheel 19 from the plate, thus resiliently supporting the gear wheel 19 which is to vary the speed of the same. The shaft- 12 is bored to receive the pins 30' which, when reciprocated move the cross keys 29 which are movable in slots 30. These cross keys contact with collars 31 and are housed within the countersunk hub 19. The rods 30 are actuated by means (not shown), by means of which the same may be. reciprocated from either side of the drum.

It will be noted from the foregoing that when the rods are shifted as shown in portion 32- of the Fig. 1, the key on the left hand side of the drum will through its contact with tl1e:c0l-' lar 31 force the adjacent gear Wheel 19 into frictional engagement with the drum, this same movement which forces one gear Wheel into engagement with the drum, releasing the gear wheel arranged on the opposite side of the drum, the movement of the other collar permitting the coiled springs to space said gear wheel and the plate which rotates with the same, said plate contacting with the collar which supports the drum against movement on the shaft.- It will thus be noted that as one of the gear wheels lt) is thrown in frictional engagement with the drum to rotate the same, the other is simultaneously brought outof contact with said drum, the wheel which is brought out of contact with the j:lrum being held out of contact by means of the springs 27.

The many advantagesof a construction of this character will be clearly apparent as it will be noted that .the peculiar mounting of the drum allows the same to rotate freely when unwinding, the drum being so mounted on the shaft as to prevent friction.

Particular attention is called to the manner of spacing the gear wheels from the drum and the peculiar manner of support-' ing said gear wheels in order that the same may freely rotate when not in contact with said drum.

Vhat is claimed is In a logging engine, a shaft, a drum loosely mounted on said shaft; said drum being formed with spaced bearings, the end portions of said shaft being reduced,' a collar secured on each of said reduced portionsfsaid collar contacting with the shoulder formed by reducing said shaft and with the bearings carried by said drum, a gear wheel loosely mounted adjacent each end of said shaft, each of said gear wheels being capable of frictional contact with said drum to rotate the same, a plurality of apertured lugs carried by each of said gear wheels,

a rod supported by each of said lugs, said rods being free to move within the aperture formed therein, a plate loosely mounted on said shaft adjacent each of said gear Wheels,

said rods being connected to said plate, and

resilient means for normally spacing said plate and saidgear wheels.

In testimony that I claim the foregoing 1 as my own, I have hereto affixed my signa-' 'tur' in the prcscnce of two witnesses.

. HARRY LEON TURNEY.

Witnesses:

Gnome A. NEWCOMB,

*- JAMES EQS'rRUM UIsT. 

